class b Enroute and descent

#1. Which of the following statements correctly describes one of the general requirements about the operation of Class B single engine aeroplanes in the public transport category?

#2. According to the information in a light aircraft manual, which gives two power-settings for cruise, 65% and 75%. If you fly at 75% instead of 65%.

#3. According to the information in a light aircraft manual, which gives two power settings for cruise, 65% and 75%. If you fly at 65% instead of 75%.